Author Topic: TOP EDGE OF FIBERGLASS  (Read 300 times)

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ayrtoncross

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TOP EDGE OF FIBERGLASS
« on: May 18, 2017, 23:04:06 »
Can anybody please advise how and what is used to make a flat edge about 5 to 8mm wide around the top edge of a tugboat.
Many Thanks T.M

Kev30

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Re: TOP EDGE OF FIBERGLASS
« Reply #1 on: May 18, 2017, 23:44:04 »
In reply to your enquiry about the top edge of a fibreglass tug hull I've used 1/16" ply. Making sure the top edge it to the right level and then drawn round onto the ply and then cut out to the width you require and then glue on using epoxy resin, using weights and masking tape to keep it in position till the resin has gone off.

Regards
Kevin


des

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Re: TOP EDGE OF FIBERGLASS
« Reply #2 on: May 19, 2017, 00:04:15 »
Hi TM

I assume that your fibreglass hull includes the bulwarks rising above the deck, but does not include the gunwales (or caprails).

Firstly you are likely to have to trim off the tops of the bulwark siding to a uniform height above the deck (or where the deck will be) - file down to 1mm below the required final height from the deck to the top of the gunwales.  From there, I roughly cutout the shape of the gunwales from 1mm styrene sheet, leaving generous extra material both sides;  you can make this in multiple pieces, with simple butt joints from one piece to the next.  Then use a CA superglue to attach the rough styrene to the top of the fibreglass - you will probably need to use a gap-filling CA glue.  Then fill any gaps with styrene putty as required.  Tip - use a strait-edge laid across both sides of the hull and gunwales to ensure that they are flat from side to side.

Next step is to file off the surplus material along the outer sides, down to a smooth, slightly rounded joint between the fibreglass and styrene.  Finally, use a pair of drawing dividers or compass to mark out a uniform width for the gunwales, all the way around the hull - then file down to that mark.  (Dividers provide a better line to work to, than does the compass, unless you use a very sharp pencil point.)

Sometimes you may need to add local reinforcing to the joint around the hull - simply superglue some styrene scraps to the underside of the gunwales, butting up against the inside of the bulwark.  Don't use material that is too thick, as this will affect the fit and appearance when you add the bulwark supports.

Hope this helps.

Des.

ayrtoncross

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Re: TOP EDGE OF FIBERGLASS
« Reply #3 on: May 19, 2017, 02:00:41 »
Many Thanks for the tips T.M